What do the numbers and letters refer to in the catalogue?

What do the numbers and letters refer to in the catalogue?

How do I get a student / library card?

How do I borrow/return Library items?

How many items can I borrow from the Library?

Are there fines for overdue books?

How long can I keep an item?

How do I reserve a book?

How can I top up my student account with credit?

Can I renew the items on my Library account?